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Cardiomyopathy

What is cardiomyopathy?

Cardiomyopathy is any disease of the heart muscle in which the heart loses its ability to pump blood effectively. In some instances, heart rhythm is disturbed and leads to arrhythmias (irregular heartbeats). There may be multiple causes of cardiomyopathy, including viral infections. Often, the exact cause of the muscle disease is never found.

What causes cardiomyopathy?

Viral infections that infect the heart are a major cause of cardiomyopathy. In some instances, cardiomyopathy is a result of another disease or its treatment, such as complex congenital (present at birth) heart disease, nutritional deficiencies, uncontrollable, fast heart rhythms, or certain types of chemotherapy for cancer. Sometimes, cardiomyopathy can be linked to a genetic abnormality. Other times, the cause is unknown. Three types of cardiomyopathy affect adults.